Dog collar



FIG. 1 is a front view of a dog collar in an unfastened, flat configuration;

FIG. 2 is a rear view of the dog collar in a fastened, flat configuration;

FIG. 3 is a front view of the dog collar in a fastened, flat configuration; and,

FIG. 4 is a top view of the dog collar in a fastened, unfolded configuration. 

The ornamental design for a dog collar, as shown and described. 